this post was submitted on 16 Mar 2025
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How would you ever actually practically use this
I make specialty vehicle electronics. My immediate thought was very small and cheap sensors. Similar to tire pressure monitoring but wired with CAN or something similar.
Same way you would in any other microcontroller application, but smaller, so the whole device can be smaller.
Get small enough and we can really have those bloodstream robots.
Maybe an actual useful smart ring?
fly-sized spy drone
In any use where size and or weight is important. For example wearables and flying drones
In small things. Probably not very feasible for hobby projects unless you can get it soldered on when the PCB is built.
BGA, like in the photo, isn't the only option. There are options only slightly larger with hand-solderable packages (if you're good at soldering)
This is already technically hand solderable with the right equipment.
Wrist watch.
see comment from @Lumberjacked (it is complicated !)